It is not a disgrace to fail. Failing is one of the greatest arts in the world.

We need to teach the highly educated man that it is not a disgrace to fail and that he must analyze every failure to find its cause. He must learn how to fail intelligently, for failing is one of the greatest arts in the world.

here is a great difference between knowing a thing and understanding it. You can know a lot and not really understand anything.

People are very open-minded about new things - as long as they're exactly like the old ones.

The price of progress is trouble.

No one would have crossed the ocean if he could have gotten off the ship in the storm.

Education is man's going forward from cocksure ignorance to thoughtful uncertainty.Where there is an open mind there will always be a frontier.